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Facile and Green Production of Human Milk Fat Substitute through Rhodococcus opacus Fermentation
journal contribution
posted on 2020-08-05, 19:10 authored by Lin-Shang Zhang, Mei-Yun Chu, Min-Hua Zong, Ji-Guo Yang, Wen-Yong LouHuman
milk fat substitute (HMFS)
is a class of structured lipids
widely used in infant formulas. Herein, HMFS was prepared by Rhodococcus opacus fermentation. The substrate oils
suitable for HMFS production were coconut oil (66.1–57.5%),
soybean oil (17.5–26.5%), high oleic acid sunflower oil (5.4–4.5%),
Antarctic krill oil (9–9.5%), and fungal oil (2%). Six HMFSs
were prepared, among which HMFS V and VI were similar to human milk
fat from Chinese in terms of fatty acid composition and triacylglycerol
species. The sn-2 position of HMFS was occupied by
palmitic acid (49.31 and 43.48% in HMFS V and VI, respectively). The
major triacylglycerols were OPL, OPO, and LPL, accounting for 15.90,
9.49, and 6.84 and 17.52, 8.44, and 8.55% in HMFS V and VI, respectively.
This study is the first to prepare structured lipids intended for
infant formula through fermentation, providing a novel strategy for
the edible oil industry.